鼠标经过GridView的行会改变行颜色，离开后恢复原来的颜色

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow) //判断是否是DataRow，以防止鼠标经过Header也有效果
        {
            e.Row.Attributes.Add("onmouseover", "e=this.style.backgroundColor; this.style.backgroundColor='#cccccc'");
            e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=e");
        }
    }